A process for loading a primer into an ammunition cartridge while concurrently forming a diffuser disk includes stamping a sheet to pre-form a diffuser disk therein. The primer, pre-formed diffuser disk and primer pocket of the cartridge are aligned with one another and thereafter, the primer is pressed through the pre-formed diffuser disk into the primer pocket. As the primer is pressed into the pre-formed diffuser disk, the primer severs one or more attachment points to release the pre-formed disk from the sheet and form the diffuser disk while the primer is loaded.
A polymer cartridge includes an insert defining the base end and a body extending from the insert. The body forms a powder chamber which is in communication with a primer pocket formed in the insert via a flash hole formed through the insert top surface. A nose extends forward from the body and includes a shoulder that transitions into a neck defining a projectile aperture. An annular ridge is formed about the inner surface of the neck and positioned between the projectile aperture and the shoulder. The annular ridge is designed to engage the outer surface of a bullet that is the same caliber of the polymer cartridge. The bullet is designed with a groove corresponding to the location of the annular ridge so that the assembled cartridge is within the acceptable range for the total axial length thereof.
A polymer ammunition cartridge that includes a cartridge body extending from the base end and a cartridge nose extending from the body is disclosed. The cartridge nose has a shoulder and a neck that extends to a projectile opening forming a distal end of the cartridge. Defined on the inner surface of the neck at an intermediate position between the shoulder and the projectile opening is an annular shelf. The neck further includes at least one wicking groove formed on the inner surface and extending from the projectile opening to the annular shelf. The wicking groove is configured to receive adhesive after a bullet has been installed into the neck and the annular shelf arrests the flow of adhesive thereby structurally limiting bondage between the neck and a bullet to the longitudinal length of the wicking grooves.
The invention herein describes an aerodynamically improved projectile which has less overall mass and achieves higher maximum velocities. The projectile has a jacket with a nose opening and a base opening and a core disposed therein. The core is open-ended and has a channel defined from the open forward end to the open base end. The channel is axially aligned with the nose opening and base opening of the jacket. Removably attached to the base opening is a base cover that is engineered to detach from the projectile during flight. A pressure differential created in the channel during projectile flight causes the base cover to detach from the projectile, thereby fully opening the channel.
F42B 12/78 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing of jackets for smallarm bullets
A method is disclosed for coating a projectile for use in an ammunition cartridge. A polymer jacket is applied to an undersized projectile core of a first standard caliber to bring the outer dimensions of the jacketed projectile into compliance with those of a second, larger caliber projectile. The polymer jacket coating may produce a non-uniform outer diameter of the polymer jacketed projectile and may include a plurality of circular cavities defined therein. The polymer-jacketed projectile may be a bullet for pistol or rifle ammunition, or a pellet, or shot for use in a shotgun shell.
F42B 12/78 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing of jackets for smallarm bullets
B22F 3/22 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor for producing castings from a slip
B29C 70/72 - Encapsulating inserts having non-encapsulated projections, e.g. extremities or terminal portions of electrical components
F42B 5/02 - Cartridges, i.e. cases with propellant charge and missile
F42B 12/74 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
The present invention provides a method of making a metal injection molded ammunition cartridge comprising the steps of: providing an ammunition cartridge mold comprising a bottom portion having a primer recess extending into the bottom portion adapted to receive a primer, a flash hole positioned in the primer recess through the bottom surface; side walls extending from the bottom portion to a nose end aperture, wherein a propellant chamber is formed between the nose end aperture and the bottom surface; injecting a metal composition into the ammunition cartridge mold to form a metal injection molded ammunition cartridge; and removing the metal injection molded ammunition cartridge from the ammunition cartridge mold.
The present invention provides a primer insert for a polymer ammunition cartridge. The primer insert has a top surface opposite a bottom surface. The top surface has a primer recess defined therein, which is in fluid communication with the propellant chamber of the ammunition cartridge through a flash hole defined through the bottom surface. A groove is defined in the primer recess and surrounds the flash hole. A planar portion of the bottom surface surrounding the flash hole is connected to a vertical coupling element by a transition region. The transition region has a first and second concave portions positioned around a transition protrusion. An extraction flange is formed about the top surface.
A projectile for use in a firearm ammunition cartridge, and a method of forming the projectile the projectile including a core, a jacket in which the core is disposed, the jacket having a closed rearward end and an open forward end, the forward end tapering inwardly toward a longitudinal centerline of the jacket to define an ogive portion of the projectile, and extending past a forward end of the core to form an open space inside the jacket between the forward end of the core and the forward end of the jacket, and a plurality of ventilation ports formed proximate the forward end of the jacket, each of the ventilation ports having a first opening on an inner surface of the jacket defining the open space, and a second opening on an outer surface of the jacket.
F42B 12/34 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect expanding before or on impact, i.e. of dumdum or mushroom type
F42B 10/46 - Streamlined nose conesWindshieldsRadomes
F42B 12/78 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing of jackets for smallarm bullets
F42B 10/44 - Boat-tails specially adapted for drag reduction
9.
Methods and devices metering and compacting explosive powders
A powder compaction device is disclosed. The device has a drive motor operable connected to a compaction rod that moves through a loading platform to a cartridge holding platform. A powder loading station is positioned below the loading platform and above the cartridge holding platform. The compaction rod moves through the powder loading station, which loads a predetermined volume of propellant powder into one or more reliefs defined in the compaction rod. The cartridge holding platform has a removable cartridge fixture designed to receive an ammunition cartridge to be loaded and compacted with propellant powder. The propellant powder is released into the cartridge fixture from the reliefs as the compaction rod passes a funnel defined at an upper end of the fixture. After releasing the powder, the compaction rod continues into an interior chamber of the fixture to compact the powder contained therein.
The present invention includes a weapon with a thermoelectric system for reducing the heat of the weapon, comprising: a weapon; one or more panels in contact with at least one region of the weapon, wherein the each of the one or more panels independently comprise an electrically and thermally insulating material; a plurality of thermoelectric elements; and a plurality of conductors comprising (i) a compacted portion that is compacted in cross section inside the panel and (ii) an expanded portion that is expanded in at least one dimension outside the panel, wherein the expanded portion of the plurality of conductors projects away from and is disposed adjacent to a surface of the panel and directly connects one thermoelectric element to another thermoelectric element of the plurality of thermoelectric elements, wherein the plurality of thermoelectric elements comprises alternating n-type and p-type thermoelectric elements.
F25B 21/02 - Machines, plants or systems, using electric or magnetic effects using Peltier effectMachines, plants or systems, using electric or magnetic effects using Nernst-Ettinghausen effect
F41A 13/00 - Cooling or heating systemsBlowing-through of gun barrelsVentilating systems
H01L 35/32 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof operating with Peltier or Seebeck effect only characterised by the structure or configuration of the cell or thermocouple forming the device
13.
POLYMER AMMUNITION HAVING AN ALIGNMENT AID, CARTRIDGE AND METHOD OF MAKING THE SAME
One embodiment of the present invention provides a polymeric ammunition cartridge and methods of making and using the same. The cartridge includes a substantially cylindrical insert connected to a substantially cylindrical polymeric middle body. The substantially cylindrical insert includes a top surface opposite a bottom surface and a substantially cylindrical coupling element that extends from the bottom surface, a primer recess in the top surface that extends toward the bottom surface, a primer flash hole positioned in the primer recess to extend through the bottom surface, and a flange that extends circumferentially about an outer edge of the top surface. The substantially cylindrical polymeric middle body includes a substantially cylindrical polymeric bullet-end and a substantially cylindrical polymeric coupling end connected by a powder chamber, wherein the substantially cylindrical polymeric coupling end extends over the substantially cylindrical coupling element and covers a circumferential surface of the primer flash hole.
The present invention provides a powder compaction device comprising a drive motor; a compaction rod comprising a metering region; a first funnel-shaped device having a first funnel aperture aligning to allow the metering region to pass through; an ammunition cartridge fixture comprising a second funnel-shaped area having a second funnel aperture to allow the loading region to pass through the second funnel aperture and the compaction end in an ammunition cartridge shaped void; one or more metering reliefs, wherein each relief has a powder metering volume; a powder reservoir in communication with the first funnel-shaped area; a compaction controller to control the vertical movement of the compaction rod; a powder metering controller to control the amount of the powder delivered; and a loading controller to control the vertical movement of the metering region.
F42B 33/02 - Filling cartridges, missiles, or fuzesInserting propellant or explosive charges
F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor
C06B 21/00 - Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
F42B 5/00 - Cartridge ammunition, e.g. separately-loaded propellant charges
F42B 12/00 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
F42B 30/00 - Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
16.
Ammunition cartridge nose having an angled shoulder
The present invention provides a primer insert for a polymer ammunition cartridge comprising: a top surface; a bottom surface opposite the top surface; a coupling element that extends from the bottom surface, wherein the coupling element comprises an interior surface and an exterior surface, wherein the interior surface comprises: a convex transition region that transitions from the bottom surface to a second segment wherein the transition region has an overall convex shape; a first segment extending from the second segment and terminates at a tip, wherein the first segment has a first segment distance from 0.06 to 0.14 inches and the second segment has a second segment distance from 0.05 to 0.15 inches, wherein the second segment has a second segment angle from +3 to −3 degrees relative to the first segment angle and the first segment has a first segment angle from +6 to −6 degrees from perpendicular to the top surface; a primer recess in the top surface that extends toward the bottom surface; a primer flash aperture positioned in the primer recess through the bottom surface; and a flash aperture groove in the primer recess and positioned around the primer flash aperture and adapted to receive a polymer overmolding through the primer flash aperture.
The present invention provides a primer insert for a polymer ammunition cartridge comprising: a top surface; a bottom surface opposite the top surface; a coupling element that extends from the bottom surface, wherein the coupling element comprises an interior surface and an exterior surface, wherein the interior surface comprises: a convex transition region that transitions from the bottom surface to a second segment wherein the transition region has an overall convex shape; a first segment extending from the second segment and terminates at a tip, wherein the first segment has a first segment distance from 0.02 to 0.18 inches and the second segment has a second segment distance from 0.02 to 0.18 inches, wherein the second segment has a second segment angle from +3 to −3 degrees relative to the first segment angle and the first segment has a first segment angle from +6 to −6 degrees from perpendicular to the top surface; a primer recess in the top surface that extends toward the bottom surface; a primer flash aperture positioned in the primer recess through the bottom surface; and a flash aperture groove in the primer recess and positioned around the primer flash aperture and adapted to receive a polymer overmolding through the primer flash aperture.
The present invention includes a primer insert for a polymer ammunition cartridge comprising: a top surface; a bottom surface opposite the top surface; a coupling element that extends from the bottom surface, wherein the coupling element comprises an interior surface and an exterior surface, wherein the interior surface comprises: a convex transition region that transitions from the bottom surface to a second segment wherein the transition region has an overall convex shape; a first segment extending from the second segment and terminates at a tip, wherein the first segment has a first segment distance from 0.06 to 0.14 inches and the second segment has a second segment distance from 0.05 to 0.15 inches, wherein the second segment has a second segment angle from +3 to −3 degrees relative to the first segment angle and the first segment has a first segment angle from +6 to −6 degrees from perpendicular to the top surface; a primer recess in the top surface that extends toward the bottom surface; a primer flash aperture positioned in the primer recess through the bottom surface; and a flash aperture groove in the primer recess and positioned around the primer flash aperture and adapted to receive a polymer overmolding through the primer flash aperture.
The present invention provides a two piece and a three piece primer insert for ammunition piece. Each of the individual pieces may be formed by punching, pressing, stamping, molding, milling, coining, or by additive manufacturing. The individual pieces may be joined by clinching, pressing welding soldering, sintering, adhesive gluing, staking, and iterative addition by forming one piece into another piece.
The present invention provides three piece primer insert for use in polymer ammunition comprising: an upper primer insert portion comprising an upper primer insert bottom portion, a substantially cylindrical coupling element extending away from the upper primer insert bottom portion; and an upper flash aperture that extends through the upper primer insert bottom portion, a lower primer insert portion in contact with the upper primer insert portion, wherein the lower primer insert portion comprises a lower primer insert top portion positioned adjacent to the upper primer insert bottom portion at a connection joint, a lower flash aperture positioned in the lower primer insert top portion and aligned with the upper flash aperture, and a primer recess that extends away from the lower primer insert top portion to an extraction flange and in communication with the lower flash aperture; and a connecting portion that secures the upper primer insert portion and the lower primer insert portion wherein the connecting portion comprises a connecting member positioned in the upper flash aperture and the lower flash aperture, an upper tab connected to the connecting member to extend away from the upper flash aperture into the upper primer insert portion, a lower tab connected to the connecting member to extend away from the lower flash aperture into the primer recess, and a flash hole that extends from the upper tab to the lower tab to connect the upper primer insert bottom portion to the primer recess.
The present invention includes a device for determining the force necessary for the separation of a bullet from an ammunition cartridge comprising a chamber housing having central bore extending from a lower housing end to an upper housing end and terminating at a upper aperture, wherein the central bore comprises a chamber diameter adapted to accept an ammunition cartridge and that the bullet partially extends from the upper aperture; a frustaconical shape shoulder in the central bore at the upper housing end to reduce the chamber diameter to mate to an ammunition cartridge shoulder; a neck that connects the upper aperture to the frustaconical shape shoulder adapted to accept an ammunition cartridge neck; a cartridge retention lip within the upper aperture adapted to contact an ammunition cartridge bullet aperture; a chamber mount adapted to connect the chamber housing and a testing device; a bullet securing device comprising a bullet securing end to secure the bullet and a bullet securing device mount adapted to connect to the testing device; a moving mechanism to move the bullet securing device away from the chamber housing; a sensor in communication with the moving mechanism to measure a force exerted by the moving mechanism; and a display in communication with the sensor to display and or record the force.
The present invention provides polymer ammunition, ammunition cartridge, ammunition case, and portions thereof having traditional and non-traditional cartridge shapes or profiles.
